1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.internal.jshell.tool; 27 28 import java.io.IOException; 29 30 /** 31 * Interface for defining user interaction with the shell. 32 * @author Robert Field 33 */ 34 abstract class IOContext implements AutoCloseable { 35 36 @Override close()37 public abstract void close() throws IOException; 38 readLine(String firstLinePrompt, String continuationPrompt, boolean firstLine, String prefix)39 public abstract String readLine(String firstLinePrompt, String continuationPrompt, boolean firstLine, String prefix) throws IOException, InputInterruptedException; 40 interactiveOutput()41 public abstract boolean interactiveOutput(); 42 history(boolean currentSession)43 public abstract Iterable<String> history(boolean currentSession); 44 terminalEditorRunning()45 public abstract boolean terminalEditorRunning(); 46 suspend()47 public abstract void suspend(); 48 resume()49 public abstract void resume(); 50 beforeUserCode()51 public abstract void beforeUserCode(); 52 afterUserCode()53 public abstract void afterUserCode(); 54 replaceLastHistoryEntry(String source)55 public abstract void replaceLastHistoryEntry(String source); 56 readUserInput()57 public abstract int readUserInput() throws IOException; 58 59 class InputInterruptedException extends Exception { 60 private static final long serialVersionUID = 1L; 61 } 62 } 63 64